How well does sense detect various Heat Pumps?

[ixu]

@johnavedian

Yes it has just one CT. The power leads for the DROK come off both breakers going to the GSHP so it knows how much power is being delivered, and my assumption is that it multiplied whatever it detects on the one CT x 2 to provide data on the display.

True. And probably the phases are being used “evenly” so you’ll get an accurate account by doubling the single current reading on one phase. The wired-in DROK is both powering the DROK itself and giving it voltage readings on each phase (like Sense does). The gotcha is if there’s a component in the GSHP system that’s running single-phase (120V) and so pulling more current on that phase (voltage unaffected). That’s probably not the case but it’s something to be aware of. Auxiliary heaters, fans and controllers could potentially be using a single phase.

That brings me to a thought:

Adding a Sense as Device Analysis tool

With a dedicated Sense on a single device you can accurately track that device’s usage and use Goals to set certain alerts. Detection is still relevant in so far as Sense is capable of identifying all the components of the device. So if Sense knows, say, “I am only monitoring a Ground Source Heat Pump” one can assume that could lead to more fine-grained component detection and, more importantly, reliable usage alerts and failure detection. This is much the same as the potential for failure det…